CN103119347A - Valve trim apparatus having cavity to receive contaminates from sealing surface - Google Patents
Valve trim apparatus having cavity to receive contaminates from sealing surface Download PDFInfo
- Publication number
- CN103119347A CN103119347A CN201080067978XA CN201080067978A CN103119347A CN 103119347 A CN103119347 A CN 103119347A CN 201080067978X A CN201080067978X A CN 201080067978XA CN 201080067978 A CN201080067978 A CN 201080067978A CN 103119347 A CN103119347 A CN 103119347A
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- Prior art keywords
- valve
- closure element
- valve seat
- seat
- trim device
- Prior art date
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000012530 fluid Substances 0.000 claims description 87
- 239000002245 particle Substances 0.000 claims description 33
- 239000003344 environmental pollutant Substances 0.000 claims description 26
- 231100000719 pollutant Toxicity 0.000 claims description 26
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 238000000034 method Methods 0.000 description 26
- 238000005260 corrosion Methods 0.000 description 12
- 230000007797 corrosion Effects 0.000 description 12
- 239000003054 catalyst Substances 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 230000003628 erosive effect Effects 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 3
- 241000294743 Gamochaeta Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/04—Arrangements for preventing erosion, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/246—Combination of a sliding valve and a lift valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
- F16K1/385—Valve members of conical shape contacting in the closed position, over a substantial axial length, a seat surface having the same inclination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
- Sliding Valves (AREA)
Abstract
A valve trim apparatus comprises a valve seat (216) and a closure member (214) to operatively engage the valve seat (216). One of the closure member (214) and the valve seat (216) includes a plurality of annular ribs (222), and at least one of the valve seat (216) and the closure member (214) defines at least one groove (218) to be positioned between at least two of the annular ribs (222) to receive material from a sealing surface (220) between the closure member (214) and the valve seat (216) when the closure member (214) is sealingly engaged with the valve seat (216).
Description
Technical field
Present disclosure relates generally to control valve, and relates to particularly the trim device that has be used to the chamber of the pollutant that deposits on the sealing surfaces that is received in trim.
Background technique
Fluid valve is used for controlling flowing of process flow in be everlasting process control plant or system.Generally speaking, fluid valve generally includes trim assembly or device, this trim assembly or device comprise valve plug (for example metal valve plug) and valve seat (for example metal seat ring), and this valve plug and valve seat are arranged in fluid path to control fluid flowing through the passageway between entrance and outlet.Valve rod or axostylus axostyle operatively are coupled to valve plug as such as actuators such as pneumatic actuator, manual actuators.Actuator is mobile valve plug between open position and closed position, and valve plug separates to allow Fluid Flow in A through the passageway at this open position and valve seat, valve plug this closed position hermetically engage valve seat to prevent the Fluid Flow in A through the passageway.
In the service application of harshness, as such as in petrochemical industry, control valve may be subject to the heavy corrosion fluid condition, and these conditions can rapid wearings or reduced the operation lifetime of trim (such as valve seat, valve plug etc.).For example trim may be exposed to and comprise the flow process stream of carrying particle (for example ceramic catalyst particulate) secretly.Use the valve seat made by stupalith and/or valve plug with reduce the heavy corrosion process flow that to damage metal seat valve and/or valve plug originally damage and/or the wearing and tearing that cause, the operation lifetime that increases thus valve seat and/or valve plug in the harsh service application of being everlasting.
Although ceramic valve seat and/or valve plug are resisted above-mentioned corrosion or the corrosive effect of particle etc. to heavens, such as particle (for example carrying particle catalyst secretly) and/or the pollutant of high-viscosity fluid or material may adhere to sealing or the seat surface of valve plug and/or valve seat during engage valve seat hermetically at valve plug relatively.Such pollutant or material may prevent that the sealing surfaces of valve plug from engaging hermetically with the seat surface of valve seat, cause thus the fluid leakage by valve seat during in closed position when valve.
Summary of the invention
In an example, a kind of trim device comprises valve seat and is used for the operatively valve plug of engage valve seat.One of valve plug and valve seat comprise a plurality of annular ribs, and at least one in valve seat and valve plug limits at least one groove being positioned between at least two annular ribs in annular rib, with when valve plug and valve base sealing when engaging the sealing surfaces from valve plug or valve seat receive material.
In another example, a kind of trim device comprises valve seat and valve closure element.Valve closure element and valve seat engage ordinatedly to limit the chamber and the sealing surfaces from valve seat or valve closure element moves pollutant to the chamber when mobile towards engaging with valve base sealing at the valve closure element.
Description of drawings
Fig. 1 illustrates the known example fluid valve of implementing with valves known internals device.
Fig. 2 A illustrates the SUMMARY An example fluid valve of implementing with example valves internals device described herein.
Fig. 2 B illustrates the enlarged portion at example valves internals device shown in Fig. 2 A shown in closed position.
Fig. 3 illustrates the enlarged portion at example valves internals device shown in Fig. 2 A shown in open position and 2B.
Fig. 4 illustrates the enlarged portion at example valves internals device shown in Fig. 2 A, the 2B shown in the neutral position and Fig. 3.
Embodiment
Generally speaking, example valves internals device described herein can use together with heavy corrosion and/or relative high viscosity process flow, as such as having the process flow (for example hydrogen fluid) of carrying particle (for example ceramic catalyst) secretly, these are carried particle secretly and may cause conventional valve trim components and damage or corrosion.Example valves internals device described herein is compared the operation lifetime of remarkable increase trim with conventional trim.More specifically, example valves internals device so that relative contamination-free (for example level and smooth or clean) sealing surfaces to be provided, engages particle and/or the high-viscosity fluid of carrying secretly in flow moves, the trim device is left in wiping or guiding sealing surfaces and/or Leakage prevention when closed position so that the trim device can be worked as valve hermetically.In addition, example valves internals device described herein provides effective Fluid Flow in A dead band, to help the improved seat surface that leaves the internals device when the internals device moves towards closed position.
A kind of example valves internals device described herein comprises for the valve plug of engage valve seat operatively.Valve plug engage valve seat ordinatedly limiting the chamber, and moves pollutant at valve plug sealing surfaces from valve seat or valve plug when engaging movement with valve base sealing to the chamber.One of valve plug and valve seat comprise a plurality of annular protrusions or rib.At least one in valve seat and valve plug limits at least one groove being positioned between at least two annular protrusions in annular protrusion, with valve plug and valve base sealing when engaging the sealing surfaces from valve plug or valve seat receive material or pollutant (such as particle, viscous fluid etc.).
In addition, cage and valve plug are configured to provide effective Fluid Flow in A dead band to avoid burn into the sealing surfaces of Protective valve internals device to corrode and/or damage.Particularly, valve plug engage ordinatedly cage with when valve plug moves towards valve seat and valve plug and valve base sealing engage before block fluid flow and reduce fluid that the sealing surfaces of crossing over the internals device flows and/or the residual amount of particle.
Fig. 1 illustrates the known fluid valve assembly 100 (the angled type control valve for example flows downward) of implementing with the valves known internals device 102 that can use in the service application (such as heavy corrosion process flow, high-voltage applications etc.) of harshness.With reference to Fig. 1, example fluid valve assembly 100 comprises valve body 104, and this valve body is limited to the Fluid Flow in A passageway 106 between entrance or side port 108 and outlet or bottom port 110.In this example, entrance 108 is with respect to outlet 110 angled turning to.Bonnet 112 is coupled to valve body 104 and valve body 104 is coupled to the actuator (not shown) via fastening piece 114.Bonnet 112 also holds packing system 116 and leaks to environment to prevent process flow.
In operation, actuator actuate valve stem 122, and therefore driving valve plug 118 between closed position and standard-sized sheet or maximum fluidity position, this valve plug 118 engages to prevent or limits Fluid Flow in A through the passageway 106 between entrance 108 and outlet 110 hermetically at this closed position and seat ring 120, and this valve plug separates with seat ring 120 to allow in this standard-sized sheet or maximum fluidity position through at entrance 108 and the Fluid Flow in A that exports the passageway 106 between 110.
In the service application (for example petrochemical industry application) of harshness, trim device 102 may be exposed to heavy corrosion and/or corrode fluid condition, these fluid conditions can rapid wearing surface 130 and/or 132 or cause the spillage of material of effects on surface 130 and/or 132, and significantly reduce the operation lifetime of trim device 102.For example valve plug 118 and/or seat ring 120 may be exposed to the process flow that is entrained with particle (for example ceramic catalyst particulate) or relative high-viscosity fluid, and these particles or relative high-viscosity fluid may wear and tear or degenerate surperficial 130 and/or 132.Therefore, in the heavy corrosion fluid condition, often use valve plug and/or the valve seat of being made by stupalith, because stupalith has the relative high-resistance to corrosion or erosion fluid condition, increase thus the operation lifetime of valve plug and/or valve seat.For example with reference to the example of Fig. 1, valve plug 118 and/or seat ring 120 can be made by stupalith.
Yet carry particle and/or relative high-viscosity fluid may adhere at valve plug 118 valve plug 118 and/or seat ring 120 when closed position engages seat ring 120 hermetically sealing surfaces 130 and/or sealing surfaces 132 secretly.In addition, in this example, the particle flow that is suspended in process flow (it can be relative high-viscosity fluid) is passed through seat ring 120, until valve plug 118 engages seat ring 120 hermetically.The such particle that is suspended in process flow may adhere to sealing surfaces 130 and/or sealing surfaces 132 when valve plug 118 engages seat ring 120 hermetically.Normally rigid such particle and high viscosity process flow can prevent that the sealing surfaces 130 of valve plug 118 from engaging to provide tight cut-out hermetically with the seat surface 132 of seat ring 120, cause thus the leakage through passageway 106 during in closed position when fluid valve 100.Therefore, be exposed in this way the seat ring 120 of particle and/or high-viscosity fluid and/or the sealing surfaces of valve plug 118 and become invalid when controlling the Fluid Flow in A of process fluid valve 100.
In addition, rigid particle contamination may damage the sealing surfaces 130 of valve plug 118 and/or the sealing surfaces 132 of seat ring 120.In some instances, particle may make valve plug and/or the seat ring made by pottery break, pulverize or rupture, thereby causes the operation lifetime of remarkable minimizing trim.
Fig. 2 A illustrates with can or corrode use at heavy corrosion, as such as relating to relative high viscosity process flow and/or being entrained with the SUMMARY An example fluid valve 200 that the example valves internals device 202 that uses in the application of process flow of particle (for example ceramic catalyst particulate) or other pollutant is implemented.Fig. 2 B illustrates the enlarged portion of the example valves internals device 202 shown in Fig. 2 A.
With reference to Fig. 2 A, fluid valve 200 comprises valve body 204, and this valve body is limited to the passageway 206 between entrance or side port 208 and outlet or bottom port 210.Trim device 202 is arranged in the passageway 206 of valve body 204 to be controlled at entrance 208 and the Fluid Flow in A that exports between 210.In the example shown, entrance 208 is angled in fact with respect to outlet 210.Bonnet (not shown) (for example similar to the bonnet 112 of Fig. 1) can be coupled to valve body 204 (for example via fastening piece) and also valve body 204 can be coupled to the actuator (not shown).Actuator can operatively be coupled to trim device 202 via valve rod 212.
Trim device 202 comprises flow control components or closure element 214 and the valve seat 216 that is depicted as valve plug.One of closure element 214 and valve seat 216 are comprised of metal, carbide (for example Tungsten carbite) or stupalith, and another in closure element 214 and valve seat 216 is comprised of the material different from the material of closure element 214.In this example, valve seat 216 is comprised of stupalith (for example carbide), and closure element 214 is comprised of stainless steel.Therefore, because closure element 214 is comprised of metal, so closure element 214 will cut off to provide relatively closely with respect to valve seat 216 surrenders (for example distortion) that are comprised of pottery or carbide.Yet in other example, closure element 214 can be comprised of stupalith, and valve seat 216 can be comprised of metallic material.In more other examples, closure element 214 and valve seat 216 can be comprised of stupalith or any other suitable anticorrosive and/or erosion material.
As shown in this example, hermetically during engage valve seat 216, valve seat 216 and closure element 214 form or limit at least one chamber 218 when closure element 214.More specifically, chamber 218 is used for receiving hermetically at closure element 214 pollutant (for example particle and/or relative high-viscosity fluid) that contact (for example adhering to sealing surperficial or regional) with sealing surfaces or the zone 220 of valve seat 216 and closure element 214 during engage valve seat 216.Chamber 218 can be limited by at least one groove (for example circular groove) that is formed on valve seat 216 and/or closure element 214.For example valve seat 216 comprises groove or chamber 218 (for example circular groove or chamber), and it is positioned at adjacent with annular rib or protrusion 222, to form or to limit protruding seat surface 224.In operation, chamber or groove 218 closure element 214 hermetically during engage valve seat 216 sealing area 220 from closure element 214 and/or valve seat 216 receive material or pollutants.Alternatively, closure element 214 (rather than valve seat 216) can comprise that at least one groove or passage 218 are to form or to limit at least one protruding seat surface 224 or annular rib 222.In another example, each in valve seat 216 and closure element 214 comprises that at least one groove or chamber 218 are to form at least one protruding seat surface 224 or annular rib 222.
In this example, trim device 202 comprises that also the cage 226 that is arranged between entrance 208 and outlet 210 is to give some flow characteristic (for example reducing noise and/or cavitation that this process flow generates) to the process flow that flows through fluid valve 200.Cage 226 also can help to keep in repair, remove and/or change other parts of trim device 202.Cage 226 can be comprised of high strength, anticorrosive and/or erosion material (for example stainless steel), and the surface 228 that is communicated with entrance 208 fluids of cage can comprise nitride, carbide and/or any other anticorrosive or erosion material (for example can be coated with by these materials).
As shown in the figure, cage 226 comprises hole 230 receiving slidably closure element 214, and at actuator guiding closure element 214 during mobile closure element 214 between primary importance (for example complete shut-down position) and the second place (for example fully open position).Cage 226 comprises that also hole 232 is to provide fluid flow characteristics.Realize required fluid flow characteristics by the geometrical shape that changes hole 232.In some example mode of executions, cage 226 can comprise that a plurality of openings with various shapes, size and/or spacing are with the cavitation that flows, reduces the process valve of controlling the process valve and/or the noise that reduces the process valve.
In this example, closure element 214 is valve plugs, and its outer surface or body 234 are set in the hole 230 that closely is engaged in cage 226 dimensionally.Closure element 214 can slide between closed position and open position in cage 226, this closure element 214 blocks the aperture 232 of cage 226 in this closed position, and at least part of in this open position unimpeded (namely hindering) aperture 232 of this closure element 214.In addition, in this example, as hereinafter more specifically as described in, body 234 provides dead band or section 236, it is set for dimensionally when closure element 214 moves towards valve seat 216 and at closure element 214 and hinders or block the Fluid Flow in A in the aperture 232 of process cage 226 before engage valve seat 216 hermetically, and prevents or be limited in the interior Fluid Flow in A of crossing over valve seat 216 of part of stroke.In other words, cage 226 and closure element 214 are configured to provide the Fluid Flow in A dead band to avoid with protection sealing area 220 when closure element 214 moves towards valve seat 216 amount that burn into corrodes and damage and/or reduce the pollutant that surrounds sealing area 220.
In example shown in Fig. 2 A and 2B, valve seat 216 is the seat rings that are sandwiched in outlet 210 adjacents of valve body 204.SUMMARY An example fluid valve 200 also comprises the outlet(discharge) flange 240 that is clipped in valve body 204 and the liner 238 between the downstream line (not shown).Valve seat 216 is clipped between cage 226 and liner 238 and via interference fit and remains in valve body 204.Sealing 241 can be arranged between seat 216 and cage 226.Liner 238 comprises prolate body 242, and it extends to protect the surface of outlet 210 or sidepiece 244 to avoid as such as unfavorable process influences such as friction, corrosion.In other example, liner 238 can be formed integrally as solid memder or structure basically with valve seat 216.In another example, liner 238 is coupled to valve body 204 via screw thread, fastening piece and/or other suitable fastening mechanism.
As in Fig. 2 B the most clearly as shown in, valve seat 216 comprises a plurality of annular protrusion or rib 222a-b and a plurality of protruding seat surface 224a-b that limits chamber or groove 218a-c (for example circular groove).The first rib 222a provides the first protruding seat surface 224a, and the second protruding seat surface 224b that itself and the second rib 222b provide is independent.In this way, the projection seat surface 224a-b provide the redundancy sealing surfaces, damage or wearing and tearing thereby if one of rib 222a or 222b and/or protruding seat surface 224a-b become, another in rib 222a or 222b and/or protruding seat surface 224a or 224b engages closure element 214 hermetically so that tight cut-out to be provided.In this example, protruding seat surface 224a-b or rib 222a-b and valve seat 216 are formed integrally as single structure.For example can form chamber or groove 218a-c and/or rib 222a-b via machining or any other suitable manufacture process, so that protruding seat surface 224a-b to be provided.
With reference to Fig. 2 B, annular rib or protrusion 222a-b comprise angled profile 246.In this example, the angled profile 246 of annular rib or protrusion 222a-b comprises ramp surface 248a-b, these ramp surfaces have leave entrance 208 and towards the outlet 210 downward-sloping.In this example, angled profile 246 provides the angle 250 that is approximately 60 degree with respect to the longitudinal axis 252 of closure element 214.Yet in other example, angled profile 246 can provide any other suitable angle.Alternatively, each ramp surface in ramp surface 248a-b can have different amount.For example the surperficial 248c of circular groove 218c can have the angled profile different from the angled profile 246 of surperficial 248a-b (for example becoming the more ramp surface of wide-angle).As hereinafter more specifically discussing, angled profile 246 helps to move or collect pollutant towards groove or chamber 218a-c.Additionally or alternatively, when fluid valve 200 during in closed position, the damage (for example fracture) to protruding seat surface 224a-b and/or the rib 222a-b of valve seat 216 that angled profile 246 reduces that thrust that actuators give to valve seat 216 and/or closure element 214 may cause.
In operation, actuator can be in closed position or (0%) 0 percent running lengths and open position or absolutely impulsion or mobile between running length.Fig. 2 A and 2B illustrate closure element 214 with respect to valve seat 216 closed position 262 (be stroke length 0 percent).In the closed position 262 of Fig. 2 A and 2B, the sealing surfaces 254 of closure element 214 hermetically the protruding seat surface 224a-b of engage valve seat 216 to prevent or to limit Fluid Flow in A through the passageway 206 between 210 at entrance 208 and outlet.Will be from sealing area 220 and towards chamber or groove 218a-c guiding, wipe or particle and/or the viscous fluid on the sealing surfaces 254 of the protruding seat surface 224a-b of slide and movable valve base 216 and/or closure element 214 otherwise.
In other words, chamber or groove 218a-c receive pollutant during the protruding seat surface 224a-b of engage valve seat 216 hermetically at the sealing surfaces 254 of closure element 214.The sealing surfaces 254 of closure element 214 will be when its bump bonding seat surface 224a-b from sealing surfaces 254 and/or protruding seat surface 224a-b wipes and towards groove or chamber 218a-c pushes away by force or mobile (for example promoting) contacts with protruding seat surface 224a-b and/or sealing surfaces 254 pollutant.The angled profile 256 of projection seat surface 224a-b and/or the angled profile 260 of sealing surfaces 254 also help to collect pollutant in chamber or groove 218a-c.
In addition, the angled profile 246 of rib 222a-b (such as ramp surface 248a-c) helps to move during engage valve seat 216 hermetically at closure element 214 and leaves with the pollutant of sealing area 220 contacts (particle such as relative high-viscosity fluid, in being suspended in flow etc.) and/or towards the chamber or groove 218a-c.Damage or wearing and tearing if one of protruding seat surface 224a-b becomes, another in protruding seat surface 224a-b provides sealing when closure element 214 engage valve seat 216.Therefore, protruding seat surface 224a-b provides the redundancy sealing.
In addition, say as mentioned, example valves internals device 202 provides effective Fluid Flow in A dead band, with at closure element 214 from open position 300 (being a hundred per cent of stroke length) as shown in Figure 3 when moving to closed position 262 shown in Fig. 2 A and 2B, reduce by sealing area 220 and flow and/or adhere to particle or the pollutant of sealing area 220.
At fully open position shown in Fig. 3 300, closure element 214 separates from valve seat 216, flows with the maximum fluid of realization through the passageway 206 between entrance 208 and outlet 210 of valve body 204.Relatively high-viscosity fluid and/or the fluid that is entrained with particle flow through passageway 206 by valve seat 216.When the particle leap valve seat 216 in being suspended in process flow flows, can corrode and corrode by valve seat 216 opposings that stupalith forms.In order to limit or to prevent the Fluid Flow in A between 210 at entrance 208 and outlet, actuator moves closure element 214 towards valve seat 216.Closure element 214 slides between open position 300 and closed position 262 (Fig. 2 A and 2B) in cage 226, the body 234 of closure element 214 is at least part of this open position unimpeded aperture 232, and the body 234 of closure element 214 blocks the aperture 232 of cage 226 in this closed position.
Fig. 4 illustrate closure element 214 when moving between closed position 262 shown in open position shown in Fig. 3 300 and Fig. 2 A and 2B in the neutral position 400 closure element 214.As shown in Figure 4, when closure element 214 moves between neutral position 400 and closed position 262, the dead band of closure element 214 or section 236 block or hinder the aperture 232 of cage 226 before the protruding seat surface 224a-b of engage valve seat 216 hermetically at the sealing surfaces 254 of closure element 214, with restriction or prevent Fluid Flow in A by valve seat 216.Therefore, the Fluid Flow in A dead band section of closure element 214 or zone 236 and the opening of cage 226 relative to and/or adjacent the movement, with dead band running length that closure element 214 is provided to total travel length.The dead band section of sealing surfaces 254 and/or body 234 or zone 236 can be configured to providing the predetermined fluid flow dead band before fluid valve 200 is during in complete shut-down position 262 as shown in Figure 2A and 2B.Additionally or alternatively, can be on yardstick or sets for dimensionally and provide the district's running length of being ready to give one's life for a cause in the aperture 232 of cage 226.
In operation, at closure element 214 in closed position 262 hermetically before engage valve seat 216, dead band section or zone 236 restrictions or stop the particle that is suspended in flow.Closure element 214 hermetically before engage valve seat 216 Fluid Flow in A of restricted passage valve seat 216 significantly reduce the residual amount of pollutant in being suspended in streaming flow or particle in order to avoid assemble or adhere to the sealing area 220 of trim device 202 when closure element 214 moves towards valve seat 216.In addition, fluid moves or promotes particle at outlet 210 pressure and lifts off a seat 216 and/or closure element 214 and towards the outlet 210 of fluid valve 200.
In addition, due to closure element 214 restriction or forbid Fluid Flow in A through fluid valve 200 during the Fluid Flow in A dead band, so do not cross over the sealing surfaces 254 of closure element 214 and/or the protruding seat surface 224a-b of valve seat 216 flows at the relatively high pressure fluid of entrance 208.Reduce or minimize the life-span that the relatively high pressure fluid of crossing over sealing area 220 significantly increases sealing surfaces 254 and/or protruding seat surface 224a-b, and therefore increasing the operation lifetime of trim device 202.
Above-mentioned trim example is at the heavy corrosion fluid, as such as relative high-viscosity fluid and/or be favourable in comprising the fluid of particle (for example ceramic catalyst particulate), these fluids may prevent that closure element 214 and valve seat 216 appropriately sealed ground from engaging, and cause thus the leakage through the process flow in passageway 206 during in closed position 262 when fluid valve 200.In this example, closure element 214 and valve seat 216 engage ordinatedly to limit the chamber and when valve closure element 214 moves towards the sealing engagement with valve seat 216 sealing surfaces from valve seat 216 or valve closure element 214 move pollutant to the chamber.The trim device is configured to wipe particle, pollutant and/or high-viscosity fluid from sealing area 220 during engage valve seat 216 hermetically when closure element 214.In addition, effectively pollutant (for example relative to high-viscosity fluid or be suspended in particle in fluid) is reduced in order to avoid adhere to the sealing area 220 of valve seat 216 and/or closure element 214 when valve seat 216 moves at valve member 214 in the Fluid Flow in A dead band.
Due to the angle of valve body 204, the angled type valve advantageously allows emptying simply, because the valve body of such valve or flow path do not allow to accumulate any bag or the zone of fluid and/or residue.Therefore, the angled type control valve is used in frequent chemistry and Petroleum Industry that need to control oil residues with coking character or other liquid usually.Yet the example valves internals device of avoiding here is not limited to for the angled type fluid valve.In other example, can use as such as fluid valves such as ball valve, rotary valve, linear valves.
Although described some device here, the coverage area of this patent is not limited to this.Just the opposite, this patent covers literal upper or rationally fall into all devices in the scope of claims under equivalence principle.
Claims (20)
1. trim device comprises:
Valve seat; And
Closure element, be used for operatively engaging described valve seat, one of wherein said closure element and valve seat comprise a plurality of annular ribs, and at least one in wherein said valve seat or closure element limits at least one groove being positioned between at least two annular ribs in described annular rib, with when described closure element and described valve base sealing when engaging the sealing surfaces from described closure element or valve seat receive material.
2. trim device as claimed in claim 1, wherein said annular rib is configured to provide the redundancy sealing surfaces.
3. before trim device as claimed in claim 1, wherein said material are included in and are received in described at least one groove with the particle of the described sealing surfaces contact of described valve seat or closure element or at least one in relative high-viscosity fluid.
4. trim device as claimed in claim 1, wherein said valve seat is seat ring, and described a plurality of annular rib and described seat ring one.
5. trim device as claimed in claim 4, wherein said seat ring are used for being sandwiched in the outlet port adjacent with described valve body.
6. trim device as claimed in claim 1, wherein said annular rib has angled profile.
7. trim device as claimed in claim 6, wherein said angled profile predetermined angle is to help collecting described material in described at least one groove.
8. trim device as claimed in claim 7, the wherein said angled longitudinal axis with respect to described closure element is about 60 degree.
9. trim device as claimed in claim 1, one of wherein said closure element and valve seat comprise metal, carbide or pottery, and another in described closure element and described valve seat comprises the material different from the material of described closure element.
10. trim device as claimed in claim 1, also comprise the cage that operatively is coupled to plug, thus when described closure element moves towards described valve seat and described closure element and described valve base sealing basically stop Fluid Flow in A through described cage before engaging.
11. a trim device comprises:
Valve seat; And
The valve closure element, wherein said valve closure element and described valve seat engage to limit the chamber ordinatedly, and the sealing surfaces from described valve seat or valve closure element moves pollutant to described chamber when mobile towards engaging with described valve base sealing at described valve closure element.
12. trim device as claimed in claim 11, wherein said chamber comprise the circular groove on described valve closure element or described valve seat.
13. trim device as claimed in claim 11, wherein said valve closure element are plugs, and described valve seat is seat ring.
14. trim device as claimed in claim 11, wherein said pollutant comprise relative high-viscosity fluid or are suspended in particle in fluid.
15. trim device as claimed in claim 11, at least one in wherein said valve closure element and described valve seat comprises a plurality of annular protrusions, moves described pollutant with the described sealing surfaces from described valve seat to described chamber.
16. trim device as claimed in claim 15, wherein said annular protrusion is configured to provide the redundancy sealing surfaces.
17. trim device as claimed in claim 1 also comprises being configured to provide the cage of flow dead to protect described sealing surfaces to avoid corroding.
18. a trim device comprises:
Be used for controlling the device through the Fluid Flow in A of valve; And
Be used for removing from the sealing surfaces of described valve the device of pollutant when described valve cuts out; And
Be used for collecting the device of the pollutant of described removal, wherein said device and described device for collecting for removing operatively engages when described valve cuts out.
19. trim device as claimed in claim 18, wherein said device for removing and described device for collecting are the global features of the structure of separating with described device for controlling.
20. trim device as claimed in claim 18 also comprises for the device that the Fluid Flow in A dead band is provided before when described valve cuts out.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2010/073212 WO2011147078A1 (en) | 2010-05-25 | 2010-05-25 | Valve trim apparatus having cavity to receive contaminates from sealing surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103119347A true CN103119347A (en) | 2013-05-22 |
| CN103119347B CN103119347B (en) | 2015-10-14 |
Family
ID=45003200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080067978.XA Active CN103119347B (en) | 2010-05-25 | 2010-05-25 | There is the trim device in the chamber for receiving pollutant from sealing surfaces |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US9115814B2 (en) |
| EP (1) | EP2577125B1 (en) |
| JP (1) | JP5684902B2 (en) |
| CN (1) | CN103119347B (en) |
| BR (1) | BR112012029942B1 (en) |
| CA (1) | CA2800373C (en) |
| RU (1) | RU2542728C2 (en) |
| WO (1) | WO2011147078A1 (en) |
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| CN112166270A (en) * | 2018-05-03 | 2021-01-01 | D·K·西廷 | Valve and valve seat with seal |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP5684902B2 (en) | 2015-03-18 |
| WO2011147078A1 (en) | 2011-12-01 |
| EP2577125B1 (en) | 2019-10-23 |
| BR112012029942A2 (en) | 2020-07-14 |
| RU2012155148A (en) | 2014-06-27 |
| US20130068987A1 (en) | 2013-03-21 |
| EP2577125A4 (en) | 2016-12-07 |
| US9115814B2 (en) | 2015-08-25 |
| CA2800373C (en) | 2019-04-16 |
| CN103119347B (en) | 2015-10-14 |
| JP2013526692A (en) | 2013-06-24 |
| CA2800373A1 (en) | 2011-12-01 |
| RU2542728C2 (en) | 2015-02-27 |
| EP2577125A1 (en) | 2013-04-10 |
| BR112012029942B1 (en) | 2021-10-19 |
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